Quick definitions from WordNet (put in)▸ verb:devote (time, effort, etc.) to a task ("He put in three hours every day at the hospital")▸ verb:make an application as for a job or funding ("We put in a grant to the NSF")▸ verb:break into a conversation▸ verb:set up for use ("We put in a new sink")▸ verb:keep or lay aside for future use▸ verb:to insert between other elements▸ verb:introduce